If you want a jump starter you can trust in any roadside situation, the Gooloo GP4000 is worth getting.
I’ve used it multiple times on dead truck batteries, car sit unused weeks in winter, and charged devices on-the-go without issue.
In this review I’ll share my hands-on experience, in-depth pros and cons, care tips, real-world comparisons to other brands, and FAQs—so you’ll know if GP4000 fits your emergency kit and adventure needs.
By the end you’ll feel confident choosing this as your go-to power tool.
My Experience with the Gooloo GP4000
I first reached for the GP4000 when my SUV wouldn’t start after a weekend of hunting in freezing Ohio temperatures.
Despite the battery reading near zero, a single boost press and it cranked immediately.
All I did was clip the clamps correctly.
The case is compact enough to stash in my truck bed compartment and survived a few drops without crack or scuff.
On another occasion, I used it during a power outage to charge my phone and a camera—GP4000 delivered clean fast charging from its USB-C port.
It handled both iPhone and fast-charge USB-C devices with ease.
After jump-starting four different large engines during a group camping trip, the screen still showed more than half charge left—true to its advertised 26,800 mAh capacity.
It also illuminated a dark roadside scene with its powerful integrated LED flashlight.
I found the button layout intuitive—even in gloves—and the included manual clearly explained how to BOOST if battery voltage is really low.
Once recharged, I didn’t notice power degradation; it still performs like new several months later.
GP4000 feels like a daily partner, not just a rare-use backup.
Maintenance Tips for Your GP4000
- Recharge the unit every 2–3 months even if unused, especially in extreme climates.
- Store in a cool, dry place; avoid keeping it in direct sunlight or a hot car trunk.
- After use, clean clamps with isopropyl alcohol to prevent corrosion on terminals.
- Run a test jump once every few months to ensure battery output remains strong.
- Avoid letting battery run below 20%—GP4000 performs best when charge stays above that.
- Keep the USB-C input port sealed with the dust cap when not in use.
- Use a certified 60 W or higher USB-C PD charger for best recharge time.
- Dry internal flashlight lens and switches if exposed to rain—rubber seals help, but moisture may still enter.
- Store it upright or padded to prevent accidental drops or clamp damage.
Pros and Cons of Gooloo GP4000
Pros:
- Raw Jump Power: 4000 A peak amps handle up to 10 L gasoline or diesel engines quickly.
- Compact and Portable: Small footprint and lightweight design make it easy to stash in tight spaces.
- Fast USB-C Charging: 5 V/3 A input/output for smartphone and laptop charging.
Long Battery Life: 26,800 mAh capacity supports multiple jump-starts before needing recharge. - Built-In Flashlight: Bright LED light with SOS mode for emergencies.
- Smart Safety Protections: Built-in reverse polarity, short circuit, and overheat protection.
- Affordable Quality: Excellent price for battery size and features—outperforms many cheaper brands.
Cons:
- No Inflator Functionality: Doesn’t include a tire compressor like GT4000 does.
- Basic Display: LED indicator bar only—no LCD, voltage readouts, or diagnostic feedback.
- Single USB-C PD Input: Slower charging than GT4000’s 100 W PD support.
- Lower Temperature Support than GT: Still rated down to -20 °C, but may lag performance slightly in extreme cold.
- No 12 V Output Port: You can’t directly power 12V accessories from the unit.
- Clamps Are Metal Only: No insulation on the outside—clamps get warm and could benefit from rubber grips.
- Minimal Case Padding: The included soft case protects from scratches but isn’t drop-resistant protection.
Gooloo GP4000 Vs. Other Popular Jump Starters
- Gooloo GP4000 Vs. NOCO Boost X GBX45
The NOCO Boost X GBX45 is a solid jump starter with a peak current of 1250 amps, aimed at vehicles up to 6.5L gas and 4.0L diesel.
I’ve used both units and immediately noticed that GP4000 delivers significantly more cranking power. NOCO has a more compact build, and its rugged casing feels solid, but it couldn’t jump my friend’s 5.7L truck with a deeply drained battery—the GP4000 did it without hesitation.
Both units offer USB charging, but Gooloo includes a USB-C PD port, which NOCO lacks. This means my laptop and iPad charge much faster on GP4000.
NOCO’s safety features are great—spark-proof and ultra-protected—but GP4000 matches them with 10 built-in protections and smarter clamps.
If you drive a full-size truck or SUV or deal with harsh winters, GP4000’s 4000 amps and better value give it the edge over NOCO’s more compact, but weaker design.
- Gooloo GP4000 Vs. Hulkman Alpha 85
The Hulkman Alpha 85 is often praised for its 2000A peak current and smart digital display, which shows real-time voltage and battery health.
I used it on a diesel van, and while it did start the vehicle, it took longer and needed a second try. The Gooloo GP4000, with double the amps, had no trouble starting the same van in colder weather on the first attempt.
Hulkman shines when it comes to diagnostics. The full LED screen is informative and sleek, but GP4000 keeps things simpler with LED bars. Yet when it comes to actual performance, especially for large engines, the raw power of Gooloo is unmatched.
Alpha 85 has an IP65 rating, making it water-resistant. Gooloo is rugged but doesn’t advertise IP protection.
Still, the GP4000 feels more powerful and efficient overall. If you prioritize jump performance over smart features, Gooloo is the clear winner for me.
- Gooloo GP4000 Vs. DBPOWER 1600A
DBPOWER’s 1600A jump starter is compact, affordable, and good for casual use, especially for sedans and small SUVs.
I used DBPOWER on my neighbor’s 4-cylinder car with success, but when I tried it on my own 5.3L V8 Chevy truck, it didn’t deliver the juice needed for a cold start. GP4000, on the other hand, fired it up instantly—even after sitting for a week in winter.
DBPOWER includes a compass and LCD display, which are cool extras but feel gimmicky when your battery’s dead and you need raw power.
Gooloo charges faster, has better USB-C output, and stores more power overall with its 26800 mAh battery. The clamps also feel more premium on GP4000—thicker and more robust for heavy-duty use.
If you just want a backup for a small car, DBPOWER works. But for larger engines and reliability in bad weather, GP4000 is far more dependable.
- Gooloo GP4000 Vs. Tacklife T8 Pro
The Tacklife T8 Pro is rated at 1200A and claims to support up to 7.5L gas or 6L diesel engines.
In practice, I found it struggled to start a Ford Expedition that sat unused for over a month. Gooloo GP4000 started that same vehicle in seconds without using the BOOST function. The difference in power is very noticeable, especially with older or low-voltage batteries.
Tacklife’s interface includes a screen showing percentage and mode, which I liked, but GP4000’s no-frills design meant fewer buttons to fumble with in freezing temperatures.
Both have flashlights, but GP4000’s is brighter and better suited for roadside emergencies. Gooloo also includes a better case and stronger clamps, which gave me more confidence handling it.
If you need a jump starter for mid-sized vehicles and want a screen, Tacklife is decent. But for true power and peace of mind, GP4000 takes the lead with ease.
- Gooloo GP4000 Vs. Stanley J5C09
The Stanley J5C09 is more than just a jump starter—it’s a rolling emergency station with a built-in air compressor and 1000 peak amps.
I used it in my garage setup and liked having the AC outlet and inflator for tires. However, when I needed to jump my truck in a remote area, the unit’s bulk made it completely impractical. GP4000, being compact and powerful, was far more suited for mobile use.
The Stanley is great if you have space to keep it in a shop or RV, but not ideal for glove box or trunk storage.
GP4000 wins on portability, modern charging (USB-C), and engine compatibility. Its battery lasts longer between charges and it’s ready quicker.
While Stanley offers multi-functionality, GP4000 delivers consistent starting power in a compact, road-friendly package—something the J5C09 just isn’t built for.
Also Read: Comparison Of Gooloo Vs. Noco
Frequently Asked Questions (FAQs)
GP4000 is a compact jump starter with high jump amps and USB charging. GT4000 includes all that plus a built-in tire inflator, LCD screen, and larger battery capacity.
Yes—a 4000A model easily handles up to 10 L gasoline or diesel engines and supports multiple jump-starts per charge.
With a USB-C PD charger delivering 60 W or more, full charge takes about 90 minutes.
Yes. Gooloo is based in China and sells internationally through retailers like Amazon. Quality has improved steadily across product lines.
Final Thoughts
If you want a reliable, powerful, and compact jump starter that still packs enough battery to charge devices and deliver multiple engine starts, the Gooloo GP4000 is a solid investment.
It’s simple, highly portable, and built to perform in tough conditions.
If you don’t need an inflator or digital readouts, GP4000 offers the right balance of features, performance, and value.
Keep it charged, keep it handy—and you’ll have confidence in your kit every time you drive.
